Inspired by a large decay branching ratio (BR) of B+âf0â(980)K+
measured by Belle recently, we propose that a significant evidence of the
component of nnË=(uuË+ddË)/2â in f0â(980) could be
demonstrated in exclusive bâc decays by the observation of f0â(980) in
the final states BËâD0(â)Ï+Ïâ(KK) and BËâJ/ΚÏ+Ïâ(KK). We predict the BRs of BËâD0(â)(J/Κ)f0â(980) to be O(10â4) (O(10â5)) while
the unknown wave functions of D(â)0 (J/Κ) are chosen to fit the
observed decays of BËâD(â)0Ï0(J/ΚK0(â)).Comment: 4 pages, 2 figures, Revtex4, version to appear in PR
The widths of a glueball decay to two pions or kaons are analyzed in the pQCD
framework. Our results show that the glueball ground state has small branching
ratio for two-meson decay mode, which is around 10â2. The predicted values
are consistent with the data of ΟâÏÏ,KK if Ο particle is a
2++ glueball. Applicability of pQCD to the glueball decay and comparison
with ÏcJâ decay are also discussed.Comment: 12 pages, revtex, 2 ps figure